You can become a dual citizen of the USA and Canada because both countries let their citizens hold a second nationality. The U.S. State Department’s position is that U.S. law “does not impede its citizens’ acquisition of foreign citizenship whether by birth, descent, naturalization or other form of acquisition.”1U.S. Department of State. Dual Nationality Canada is equally direct: Canadians may take foreign citizenship while keeping their Canadian citizenship.2Immigration, Refugees and Citizenship Canada. What Is Dual Citizenship? The route is the same in both directions: get permanent residency in the country you weren’t born in, live there long enough to qualify for naturalization, pass a language and civics test, and take the oath.
Start With Permanent Residency
Neither country will consider you for citizenship until you’re already a permanent resident. This is the longest and most demanding stage of the process.
Green Card Routes for Canadians
A Canadian who wants to naturalize in the United States needs a green card first. The main pathways are family sponsorship by a U.S. citizen spouse, parent, or adult child; employer sponsorship through a labor certification and immigrant petition; and the Diversity Visa lottery.3U.S. Citizenship and Immigration Services. Green Card Eligibility Categories Immediate relatives of U.S. citizens (spouses, unmarried children under 21, and parents) face no annual cap, so their wait is shorter. Other family and employment categories can involve multi-year backlogs.
Permanent Residency Routes for Americans
Americans usually reach Canadian permanent residency through Express Entry, an online system that manages applications for the Federal Skilled Worker Program, the Canadian Experience Class, and the Federal Skilled Trades Program.4Government of Canada. Immigrate Through Express Entry You create a profile, receive a score based on age, education, language ability, and work experience, and the highest-scoring candidates receive invitations to apply. Provincial nominee programs and family sponsorship are the other common routes.
Naturalizing as a U.S. Citizen
Who Qualifies
You need to be at least 18 and to have held your green card for five years, with continuous residence in the United States during that period.5USAGov. Become a U.S. Citizen Through Naturalization Within those five years you must have been physically present in the country for at least 30 months. A trip abroad of six months or longer can break continuous residence and reset the clock.6USCIS. A Guide to Naturalization
If you’re married to a U.S. citizen, the required permanent residency drops to three years, with 18 months of physical presence, and you must have lived in marital union with your spouse throughout.7U.S. Citizenship and Immigration Services. I Am Married to a U.S. Citizen
You also need to show good moral character throughout the statutory period, pass an English test covering reading, writing, and speaking at a basic level, and pass a civics test on U.S. history and government.5USAGov. Become a U.S. Citizen Through Naturalization Older applicants get relief: at 50 or older with 20 years as a permanent resident, or 55 or older with 15 years, you can skip the English test and take civics in your native language.
Filing, Fees, and Timing
The application is Form N-400, filed online or by mail with USCIS. It costs $710 online and $760 on paper, with no separate biometrics fee.8U.S. Citizenship and Immigration Services. N-400, Application for Naturalization A fee waiver is available through Form I-912 if you receive a means-tested benefit like Medicaid, SNAP, or SSI, or if your household income is at or below 150% of the federal poverty guidelines.9Reginfo.gov. Instructions for Form I-912, Request for Fee Waiver
After filing, USCIS schedules biometrics (fingerprints and photographs) unless waived, then an in-person interview where an officer reviews your application and administers the English and civics tests. If approved, you’re scheduled for an oath ceremony. Filing to ceremony has historically run 8 to 14 months, with variation by field office.
Naturalizing as a Canadian Citizen
Who Qualifies
You must be a permanent resident and have been physically present in Canada for at least 1,095 days (three years) during the five years immediately before you sign your application.10Government of Canada. Canadian Citizenship for Adults and Minor Children: Who Can Apply Time in Canada before you became a permanent resident counts at half value, capped at 365 days of credit. You must also have filed Canadian income taxes for at least three of those five years.11Government of Canada. Check If You Are Eligible to Apply for Citizenship
Applicants between 18 and 54 have to prove English or French ability at Canadian Language Benchmarks level 4 or higher and pass a citizenship test on Canadian history, geography, government, and rights and responsibilities.10Government of Canada. Canadian Citizenship for Adults and Minor Children: Who Can Apply Applicants 55 and older are exempt from both.
Some situations disqualify you outright. You can’t apply while serving a prison sentence, on probation or parole, under a removal order, or charged with an indictable offence in Canada. Convictions for war crimes, terrorism, or treason as a permanent resident are permanent bars. A citizenship application refused for misrepresentation in the previous five years, or citizenship revoked for fraud in the previous ten, also blocks a new application.12Government of Canada. Situations That May Prevent You From Becoming a Canadian Citizen
Filing, Fees, and Timing
You submit your application package to Immigration, Refugees and Citizenship Canada with the filing fee. An adult application costs CAD $649.75, which is a $530 processing fee plus a $119.75 right-of-citizenship fee. A minor child’s application is CAD $100.13Canada.ca. Citizenship and Immigration Application Fees: Fee List Applicants 18 to 54 sit for the citizenship test, and IRCC may schedule an interview to verify the application and assess language skills. Recent processing times for citizenship grants have run around 13 months. Approved applicants receive an invitation to a citizenship ceremony.
The Oath and What It Actually Means
Each country requires an oath ceremony as the final step. The U.S. oath asks you to renounce allegiance to foreign sovereigns, support and defend the Constitution, and bear true faith and allegiance to the United States.14Office of the Law Revision Counsel. 8 USC 1448: Oath of Renunciation and Allegiance The renunciation language sounds like it should end your Canadian citizenship, but it doesn’t. The U.S. government does not treat the oath as stripping you of another nationality, and Canada does not consider you to have lost Canadian citizenship by taking it.
The Canadian oath is shorter. You swear or affirm to be faithful and bear true allegiance to King Charles the Third, King of Canada, and his heirs and successors, and to faithfully observe the laws of Canada, including the Constitution, which recognizes and affirms the Aboriginal and treaty rights of First Nations, Inuit, and Métis peoples.15Government of Canada. Discover Canada – The Oath of Citizenship You choose whether to swear or affirm.
Living With Two Passports
Each country requires its citizens to use its own passport when entering. U.S. law requires all U.S. citizens to present a valid U.S. passport when entering or leaving the United States by air.16Exchange Programs. Required Documentation Since November 2016, Canadian citizens, including dual citizens, must present a valid Canadian passport to board a flight to Canada; an electronic travel authorization or visa is not accepted in place of a passport.17Immigration, Refugees and Citizenship Canada. Dual Canadian Citizens
So in practice you show your Canadian passport boarding flights to Canada and your U.S. passport boarding flights to the U.S. At land crossings, carry both and present the one matching the country you’re entering. Once you’re a citizen of both, you never need a visa, work permit, or travel authorization in either country.
Tax Obligations You Take On
This is the part most people underestimate. The United States taxes its citizens on worldwide income no matter where they live, so if you move to Canada permanently and earn every dollar there, you still file a U.S. return every year.18Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad Canada also taxes residents on worldwide income, so a dual citizen living in Canada files in both countries.
The U.S.–Canada income tax treaty prevents most actual double taxation by letting you claim a credit in one country for taxes paid to the other.19IRS.gov. United States – Canada Income Tax Convention The foreign earned income exclusion helps too: for tax year 2026, U.S. citizens living abroad can exclude up to $132,900 of foreign earned income from their U.S. return.20Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Between the treaty credit and the exclusion, many dual citizens owe little or no extra U.S. tax, but the filing requirement never disappears.
You also pick up reporting obligations. If the combined value of your foreign financial accounts exceeds $10,000 at any point during the year, you must file a Report of Foreign Bank and Financial Accounts (FBAR) with FinCEN.21Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) A Canadian checking account plus a registered retirement savings plan can easily clear that threshold. Separately, if your foreign financial assets exceed $200,000 on the last day of the tax year or $300,000 at any point (double those amounts for joint filers) while living abroad, you also file Form 8938 under FATCA.22Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets Penalties for missing these filings are steep and apply even when no tax is owed. A tax preparer who handles U.S.–Canada cross-border returns often charges well over $1,000 a year for the combined filings, FBAR, and FATCA reporting.
Social Security and CPP Can Combine
The U.S. and Canada have a Social Security totalization agreement that lets you combine work credits earned in both countries to qualify for benefits you otherwise couldn’t claim.23Social Security Administration. U.S.-Canadian Social Security Agreement If you’ve paid into the U.S. system but don’t have the minimum six quarters of coverage, contributions to the Canada Pension Plan can count toward that requirement. It works the same way in reverse for CPP or Old Age Security.24Government of Canada. United States – Pensions and Benefits Each country still calculates your benefit using only its own credits, so this isn’t a combined pension, but it can be the difference between a partial benefit and nothing at all from one side.